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TRIFLUOROPROPYLDIMETHYL/TRIMETHYLSILOXYSILICATE.

Questionable / BINDING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

TRIFLUOROPROPYLDIMETHYL/TRIMETHYLSILOXYSILICATE is a fluorinated silicone polymer prized for its film-forming capabilities, which impart water resistance and enhance product longevity on the skin. It also acts as an emollient, contributing to a smoother skin feel and maintaining moisture.

Summary

Binding agent Emollient Skin conditioning

Science

Mechanism of Action

This siloxane polymer operates by creating a durable, protective film on the skin's surface. This film not only confers water resistance but also significantly extends the wear time of cosmetic formulations like makeup, sunscreens, and protective creams. Functioning as an emollient, it effectively minimizes surface irregularities, bolstering the skin's lipid barrier to retain moisture, resulting in a notably softer and smoother skin texture. Furthermore, it improves the tactile properties of cosmetic products, rendering them smoother and more luxurious.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

This ingredient presents as a stable solid. Closely related trimethylsiloxysilicate exhibits high resistance to oxidation, hydrolysis, and UV degradation. However, it is susceptible to degradation by strong oxidizing agents or extremely acidic conditions. When formulating in blends containing volatile components, it is advisable to operate at room temperature or below 50℃ to prevent solid sediment formation from unsealed conditions over time.

Conflicts

  • strong oxidizing agents
  • extremely acidic conditions

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded TRIFLUOROPROPYLDIMETHYL/TRIMETHYLSILOXYSILICATE is safe for cosmetic use when the final product is non-irritating or sensitizing to the respiratory tract; dermal applications showed no significant irritation, genotoxicity, or carcinogenicity. It is permitted for use in cosmetics within the European Union. However, it is classified as a PFAS (per- and polyfluoroalkyl substance) by INCI Beauty and EWG. EWG highlights concerns including potential for enhanced skin absorption, high use restrictions, moderate endocrine disruption, significant persistence and bioaccumulation, and moderate non-reproductive organ system toxicity. A preliminary patch test is advised, especially for highly sensitive skin.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

While offering valuable film-forming and emollient properties for product performance, its classification as a PFAS and associated environmental and potential health concerns warrant careful consideration in formulation.

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